Spring support



S- P. BUSH SPRING SUPPORT May 24, 1927.

2 Sheets-Sheet Original Fil ed Sept. 28. 1925 m n W 3 attozncqs May 24,1927. 1,629,476

s. P. BUSH SPRING SUPPORT 7 Original Filed Sept. 28. 1925 2.Sheets-Sheet l r A i Patented May 24; 1927.,

UNITED STATES PATENTIMOFFICE.

SAMUEL I. BUSH, OF COLUMBUS, OHIO, AS SIGNOR TO THE BUCKEYE STEELCASTINGS COMPANY, OF COLUMBUS, OHIO. i

SPRING snrron'n' Original application filed September 28, 1925, SerialNo. 59,18. Divided and this application .filed Hay 29,1926. Serial No.112,577. I

Thisapplication is a division of an application filed by Inc September28th, 1925, Serial No. 59,168, the object of the present inventionbeing-to provide a construction which will permit the side frame'to bere moved as a unit'without materially disturbing the spring plank,springs and bolster in relation to each other, thereby reducing the costof changing .wheels as well as the period-- during which the equipmentis out of service.

The inventionis illustrated in the accom-' panying drawings and consistsin certain novel features which will be hereinafter first fullydescribed and then more particularly pointed out in the appended claims.

In the drawings F igure'l is a side view of a portion of a car truckembodying the invention,

Figure 2 is a plan view ofthe same, Figure 3 is a central transversesection, Figure 4. is a detail of a key or removable stop lug.

The side frame 1 is shown With'integral journal boxes 2, although thejournal boxes need not be integral. The side frame'has vertical columnswhich define a central opening 3 to receive. the end of thebolster 4 andthe springs 5 upon which the bolster end rests. In the bottom 6 of theside frame is a pocket 7, and the end of the spring plank 8 is turneddown, as at 9, to fit snugly in the pocket, the plank, of course,extending between and connecting the two side frames of the truck. Thesprings rest upon a spring tion of the opening 3 and over the pocket 7with one end fitting between the side flanges 11 of the spring plank,the spring seatbeing formed with side flanges 12 to attain rigid'- y andng h. The flanges 11 terminate at the side frame and fit closelybetween'th lugs or flanges 13 thereon, the interfitting engagement of.the several flanges minimizing the effects of the stress on the-bend ofthe spring plank.

The weight of the springs is carried by the spring seat which, extendingover the end of the spring plank, holds the plank firmly in place. As aloaded car sways from side to side over uneven track, there is anunequal distribution of pressure upon the opposite ends of the group ofsprings when the bolster is tilted under a heavy side bearing load orblow. The drawings show means seat 10 which extends through the lowerpor- .been'wideri in its lower portion than in its for overcoming thisinequality consisting of a rib or rocker 14 on the under side of thespring seat fitting in the pocket 7 and provided in its lower facewith'a transverse concavity 15 resting on a convex saddle 16 in thepocket, the saddle constituting a fulcrum orpivotal support aboutwhichthe angularity' of the bolster will freely accommodate itself. 1

At the top of the central opening 3 in' the side frame, in the'sides.thereof, are grooves or reentrant recesses 17 which permit the frame tobepassed over the end of the bolster,-the projections 18 on the bolsterpassing through said recesses or grooves and the bolster being thenlowered to rest. on the springs. The movement of the frame over thebolster is arrested by contact with the lugs 19 on the sides of thebolster which are preferably cast integral therewith. ,Under' normalconditions of operating, the side frames restrict the transversemovements of the ,bolster by. contact with the inside stops 19 or'theoutside stops 20 arranged in spaced relation ateach side of thebolster.The outside stops 20 are constructed as separate soparts and are heldin-a definitely spaced.

' relation to the inside stops through direct interlocking with thebolster, preferably without the use of any third part, such as a bolt orrivet, for maintaining the relation. The outside stop is shown as aU-shaped key adapted to fit with its cross bar in the groove 21 in theunderside of the bolster and with its side arms between the side frameand the lugs 18.0n the bolster. The keys are between the bolsterand thesprings and are held in'place primarily by the weight or load carried bythe bolster and springs Heretofore, the opening 3'in the frame has upperportion to permit it to pass over the 1 outside column lugs of thebolster which construction required a relatively longer spring seatmember onthe frame. The relatively shorter length permitted by theconstruction 1 0 herein set forth adds materially to the strength of thedevice.

In car trucks of the usual construction, the bolster stops weregenerally not intended to be removed for the convenience of dis- 1mantling the trucks, but were either cast integral with the bolster orsecured to the same through permanent mechanical means.

- To facilitate assembling or disassembling of v the trucks, the bolsteropening was provided frame or lowering the bolster.

parts to bring the bolster into proper-relation to the enlarged portionof the bolster T openlng before the side frame could be with drawn.

With my improved construction, the grooves or recesses 17 at the top ofthe bolster opening 3 permit the frame to be -passed over the end of thebolster, the projections. 18 on the bolster passing through said groovesor recesses. The bolster is first slightly and easily lifted from thesprings to release the keys or stops 20 and permit them to be withdrawn;After'withdrawing the stops or keys, the bolster is again low- ;ered torest on the springs, whereupon the spring plank, with the superposedsprings and bolster, is raised sufficiently to clear the interlockingengagement between the spring plank and the side frame. The side framemay then be moved sidewise away from the truck without materiallydisturbin the I spring plank, springs, or bolster, thereby reducing thecost of replacing wheels or frames and expediting the work. v

Having fully described m1, invention what I claim as new and desiretosecure by Letters-Patent, is

1. In a car truck, the combination of a side frame-.having an openingtherethrough to receive a bolster and provided with a transverse groovein the wall of said opening near the upper end thereof, a group ofsprings carried by the side frame in the lower end'of the opening, abolster having its end; supported within the opening by the springs, thebolster being provided with a transverse channelin its bottom and withinner and enter lugs on its side, the outer lug being arranged to passthrough the transverse groove and the inner lug to abut the inner sideof the side frame, and a single U-shaped key engaging snugly between theouter side of the side frame and the outer lug on the bolster and in thechannel in the bottom of the bolster.

' 2. In a car truck, the combination of a side frame, a bolster engagedthrough theside frame and provided with spaced lugs on its sides, theinner lugs abutting the side frame, a group of springs supported in theside frame and'supporting the bolster, anda U- shaped key passing acrossthe bottom of the bolster and heldthereto by the .springs and havingside portions fitting between the side frames and the outer lugs on thebolster.

In testimony whereof, I have signed this specification.

. SAMUEL P. BUSH.

